Helping my son upgrade his 2006 FX4 tires
Senior Member
Joined: Oct 2008
Posts: 3,121
Likes: 4
From: Burlington, VT
I can't see the angle of the upper bj, but those appear to be fine. Some of the levels I've seen have the uca practically touching the coil. These are nothing like that.
Member
Joined: Jan 2012
Posts: 84
Likes: 5
From: New Orleans
I've been running 275 60R/20 for a few years without any problems on a 2008 FX4 Supercrew. They are just shy of a 33. I have a Rancho quick lift leveling kit. You should be able to find a comparable tire in 18s. I do have a tuner and set my tire size to diameter: 31.91 in/ 810.50 mm so the speedometer reads correctly. You can Google the overall tire diameter: "tire diameter <enter tire size>." Good luck.
